package bishi.day05_4_23;

/**
 * @author huweilong
 * @date 2022/04/23 16:38
 **/
public class Main {
    public Main() {
        System.out.println("a");
    }
    static {
        System.out.println("A");
    }
}
class B extends Main{
    public B(){
        System.out.println("b");
    }
    static {
        System.out.println("B");
    }

    public static void main(String[] args) {
        new B();
        float a = -412;
        long test = 012;
        double s = 0x12345678;
        char[] ch = new char[10];
        int num = 0;
        for(int i = 0; i < ch.length;i++) {
            if(ch[0] == '+' || ch[0] == '/' || ch[0] == '-') {
                continue;
            }
//            if(ch[i] < '0' || ch[i] > '9') {
//                return 0;
//            }
            num = (num * 10) + (ch[i] - '0');
            num *= 10;
        }
    }
}